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Product Detailed Parameters
- Description：51.275 MHz XO 1.8V 2.0X1.6 MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：51.275 MHz
- Function：Standby (Power Down)
- Output：LVCMOS
- Voltage - Supply：1.8V
- Frequency Stability：±50ppm
- Absolute Pull Range (APR)：-
- Operating Temperature：-40°C ~ 85°C
- Spread Spectrum Bandwidth：-
- Current - Supply (Max)：24mA
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.079" L x 0.063" W (2.00mm x 1.60mm)
- Height - Seated (Max)：0.031" (0.80mm)
- Supplier Device Package：-
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Overview
The 18QHTF21-51.275-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 51.275 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down feature for energy management. It is housed in a compact 4-SMD, no lead surface-mount package with dimensions of 2.00mm x 1.60mm.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes standby or power-down functionality to reduce power consumption
- Designed for surface-mount assembly in small form factor applications
Applications
- General purpose clock generation in electronic circuits
- Timing reference for digital systems requiring 51.275 MHz
- Embedded devices utilizing low-voltage logic interfaces
Procurement Notes
Verify the specific ordering suffix 'PD' against the manufacturer's current documentation to confirm exact pinout and electrical specifications. Ensure that the 1.8V supply requirement aligns with the target system design. Confirm package dimensions match the PCB footprint requirements before finalizing procurement decisions.
Selection Notes
Select this component when a precise 51.275 MHz timing source is required with low voltage operation. Consider the 4-SMD package size for space-constrained designs. Evaluate the need for standby functionality if power management is a critical design parameter for the application.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystals and oscillators. The series typically offers various frequencies and packages. Mercury Electronics is a Taiwan-based supplier established in 1973, focusing on frequency control products including TCXOs and VCTCXOs.
Replacement Considerations
Direct substitutes may include other 51.275 MHz LVCMOS oscillators in 2.0x1.6mm packages from different manufacturers. Verify pin compatibility and voltage levels. Cross-reference with similar Mercury models like 18QHTF21-51.200-PD for frequency adjustments.
